EKG contact

• US 3,958,564 A
• Filed: 05/09/1975
• Issued: 05/25/1976
• Est. Priority Date: 05/09/1975
• Status: Expired due to Term

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Langguth, Arthur F.
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US05/576,080
• Time in Patent Office: 382 Days
• Field of Search: 128/2.06 E, 128/2.1 E, 128/DIG. 4, 128/404, 128/418, 128/2.05 E, 128/2.05 P, 128/2.05 S, 128/2 K, 248/206 R, 248/467, 248/362, 248/363
• US Class Current: 600/387
• CPC Class Codes: A61B 5/252 by suction

Abstract

An improved electrical contact is configured to provide more accurate eleical potential readings. Electrocardiograms and electroencephlograms, for example, require that a monitoring electrode be firmly held on a creature'"'"'s body to give valid readouts. To that end, a suction cup is cast integrally from a resilient compound to create a sufficient suction when it is pressed against a surface. An annular shoulder portion molded in the suction cup engages a projection from the electrode and holds the electrode firmly on the surface. The suction cup'"'"'s relatively wide lip ensures the continued creation of the vacuum while the biasing force of the annular shoulder on the extension ensures responsive operation over a prolonged period of time.

Claims

1. An apparatus located on the body of a living animal for sensing electrical potentials therein comprising:

means having an outwardly reaching member for electrically coupling the electrical potentials to remote circuitry, the electrically coupling means further includes a ring shaped member coupled to the outwardly reaching member and

means coupled to the outwardly reaching member for holding the electrically coupling means firmly against the animal'"'"'s body, the holding means having a lip portion for sealingly engaging the animal'"'"'s body, an annular shoulder portion for forcing the outwardly reaching portion toward the animal'"'"'s body to ensure the firm holding of the electrically coupling means thereon, a frustoconically shaped shell portion interconnecting the lip portion and the annular shoulder portion and a cup shaped shell portion mounted on the annular shoulder portion to define a continuously extending chamber, the ring shaped member is carried on the outside of the holding means where the lip portion is joined to the frustoconically shaped shell portion to ensure the firm holding of the electrically coupling means irrespective of its radial orientation from the holding means.

2. An apparatus according to claim 1 in which the lip portion, frustoconically shaped shell portion and cup shaped shell portion are integrally formed from a resilient compound to urge the continuously extending chamber to an extended configuration thereby creating a vacuum to further ensure the firm holding of the electrically coupling means.

3. An apparatus according to claim 2 in which the lip portion, frustoconically shaped shell portion, and cup shaped portion allow a one-handed deformation thereof, thereby reducing the chamber'"'"'s volume and creating the vacuum after being held on the animal'"'"'s body.